This reverts commit 962f0222.

 * nxp_fmuk66-e: Use srf05 distance sensor
 * nxp_fmuk66-v3: Use srf05 distance sensor

nxp_fmuk66-v3: defconfig MMCSD enable multiblock

nxp_fmuk66-v1:Disable multiblock as it fails

Also move board_determine_hw_info and board_gpio_init under platforms/nuttx

and remove the px4_ prefix, except for px4_config.h.

command to update includes:
for k in app.h atomic.h cli.h console_buffer.h defines.h getopt.h i2c.h init.h log.h micro_hal.h module.h module_params.h param.h param_macros.h posix.h sem.h sem.hpp shmem.h shutdown.h tasks.h time.h workqueue.h; do for i in $(grep -rl 'include <px4_'$k src platforms boards); do sed -i 's/#include <px4_'$k'/#include <px4_platform_common\/'$k/ $i; done; done
for in $(grep -rl 'include <px4_config.h' src platforms boards); do sed -i 's/#include <px4_config.h/#include <px4_platform_common\/px4_config.h'/ $i; done

Transitional headers for submodules are added (px4_{defines,log,time}.h)

A board only needs to define:
 #define RC_SERIAL_PORT                     "/dev/ttyS4"

Then it can optionally define one or more of the following:
 #define RC_SERIAL_SWAP_RXTX
 #define RC_SERIAL_SINGLEWIRE
 #define RC_INVERT_INPUT(_invert_true) px4_arch_gpiowrite(GPIO_SBUS_INV, _invert_true)

 - starts requirements for PX4 modules (hrt, param, etc)

   One a 32.768 is added (RC16) to the board this will keep time.

 - px4_add_module now requires MAIN
 - px4_add_library doesn't automatically link

   On this HW the VBUS detection is on the ADC. The ADC module
   reads the value and sets a global flag as well as publishing
   the value via uOrb.

   PX4 Driver for Kinetis uisng just ADC1.

   On V3 HW RC00 the USB_VBUS_VALID on pin 36 of the MCU
   ADC0_SE16/ADC1_SE22 is bridged to pin 29 ADC1_DP0 and read
   there. But because of missing schottky diodes on V3 HW RC00
   the signal is true (3.3V) when powered by the Power Module.

   was:<nuttx/arch.h> is:platform/cxxinitialize.h
   Removed PX4 version:src/modules/systemlib/up_cxxinitialize.c
   in favor of nuttx platform/gnu/gnu_cxxinitialize.c